Question

当我点击以编程方式创建的按钮时，我试图在iPhone上显示一个弹出框。但是，我发现popover占据了整个屏幕。到目前为止，我已经在popover视图控制器的类中编写了以下代码：

import UIKit

class GroupSetsPopoverController: UIViewController, UIPopoverPresentationControllerDelegate {

override func viewDidLoad() {
    super.viewDidLoad()

    self.preferredContentSize = CGSize(width: 375, height: 162)
}

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "infoButtonSegue" {
        let popoverViewController = segue.destination as! GroupSetsPopoverController

        let pvc = popoverViewController.popoverPresentationController
        pvc?.delegate = self

        //popoverViewController.modalPresentationStyle = UIModalPresentationStyle.popover
        //popoverViewController.popoverPresentationController!.delegate = self
    }
}

func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
    return .none
}
}

任何指导都将不胜感激。我试图在Stack Overflow上关注各种教程和帖子，但无济于事。

Answer 1

您可以查看answer和library以获取参考资料。如果GroupSetsPopoverController是你的popover viewcontroller，你可以这样做：

init(for sender: UIView)) {
    super.init(nibName: nil, bundle: nil)

    modalPresentationStyle = .popover
    guard let pop = popoverPresentationController else { return }
    pop.sourceView = sender
    pop.sourceRect = sender.bounds
    pop.delegate = self
}

从程序化创建按钮在iPhone（Swift 3）上弹出

1 个答案: